For procedures to remove and install door windows,
see section Window Replacement.

Inspect seals around window, door, and door lock assembly and replace if damaged. Check door lock and
latch assembly. Make sure it opens, shuts, and locks
door securely and there is no rust, grease, oil, or dirt
on door lock and latch assembly parts. Inspect window for cracks or chips. Replace window if damaged.

Clean

WARNING
Compressed air can move particles so that they
cause injury to the user or to other personnel.
Make sure that the path of the compressed air is
away from all personnel. Wear protective goggles
or a face shield to prevent injury to the eyes.
Check door assembly parts for oil, grease, dirt, and
other debris. Clean door assembly and parts with a
clean cloth, soap, and water. Compressed air can be
used for drying door assembly and parts.